Step 2 of 7 · DMARC for a Small Domain
One SPF record — includes, not a pile of duplicates
One SPF record — includes, not a pile of duplicates — step 2 of 7 in DMARC for a Small Domain. SPF is a single TXT on the root (or the mail hostname): v=spf1 include:_spf.google.com include:spf.protection.outlook.com ~all — yours will…
Free tech & internet tip: One SPF record — includes, not a pile of duplicates (step 2 of 7 from "DMARC for a Small Domain").
SPF is a single TXT on the root (or the mail hostname): v=spf1 include:_spf.google.com include:spf.protection.outlook.com ~all — yours will match YOUR hosts, not this example pasted blindly.
Two SPF records on the same name = fail. Merge with include: and ip4: only if you know the IP. End with ~all (soft fail) until DMARC is proven. -all comes later. Lookup limits: too many includes flatten into a permerror. Keep it short.
You'll need
- Every sender listed
- One SPF TXT only
- ~all until you are sure
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